8. Some people believe that gaps in the fossil record between one species and its ancestor are evidence that evolution is not true. The following are valid arguments
against this belief, except:
A. The fossil record does not contain every species that ever existed.
B. Every fossil in the fossil record has not been discovered yet.
C. Homologous structures, similar embryonic structures, and similarities in
organic molecules still provide evidence for evolution.
D. Structural similarities are enough evidence of the evolutionary relation
between species.

Yes yes yes very good

Movement of earth’s crust creates low areas that fill with water. also streams flow into shallow areas.

Na+ loss through sweet plus the dilution has lowered na+ concentration outside of neurons, altering the na+ equilibrium potential. sodium exists more outside the cells than inside. when na+ is lost by sweat plus the dilution( because they drink a lot of water) changes the concentration outside the cell, forcing the water to enter the cell and attempt to balance the concentration inside/outside.the problem is that the abundance of water will cause the cells to swell. most cells can adapt, however, the brain cells can't that's why the runner has confusion and can't control the muscles.  if not treated and this occurs in less than 48 hours, it can be immediately fatal .